I agree, I thought the same, but we replaced the lock actuator/assembly with a new aisin part. Did not resolve. So found this thread, and realized the ecu is different from the relay assembly of the pre-03 models and therefore more difficult to troubleshoot. So is the next step to find a used...
Anyone know where to find a schematic for the 03-05 relay box? Trying to troubleshoot my 04 LX. Key fob locks/unlocks all doors but driver, and driver door lock button locks/unlocks all doors but driver. Physical key is only way to unlock driver door from outside.
The lock button triggers...